Publication Abstracts

Turtle et al. 2018

Turtle, E.P., J.E. Perry, J.M. Barbara, A.D. Del Genio, S. Rodriguez, S. Le Mouélic, C.J. Sotin, J.M. Lora, S. Faulk, P. Corlies, J. Kelland, S.M. MacKenzie, R.A. West, A.S. McEwen, J.I. Lunine, J.E. Pitesky, T.L. Ray, and M. Rou, 2018: Titan's meteorology over the Cassini mission: Evidence for extensive subsurface methane reservoirs. Geophys. Res. Lett., 45, no. 11, 5320-5328, doi:10.1029/2018GL078170.

Cassini observations of Titan's weather patterns over >13 years, almost half a Saturnian year, provide insight into seasonal circulation patterns and the methane cycle. The Imaging Science Subsystem and the Visual and Infrared Mapping Spectrometer documented cloud locations, characteristics, morphologies, and behavior. Clouds were generally more prevalent in the summer hemisphere, but there were surprises in locations and timing of activity: southern clouds were common at mid-latitudes, northern clouds initially appeared much sooner than model predictions, and north-polar summer convective systems did not appear before the mission ended. Differences from expectations constrain atmospheric circulation models, revealing factors that best match observations, including the roles of surface and subsurface reservoirs. The preference for clouds at mid-northern latitudes rather than near the pole is consistent with models that include widespread polar near-surface methane reservoirs in addition to the lakes and seas, suggesting a broader subsurface methane table is accessible to the atmosphere.

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BibTeX Citation

  author={Turtle, E. P. and Perry, J. E. and Barbara, J. M. and Del Genio, A. D. and Rodriguez, S. and Le Mouélic, S. and Sotin, C. J. and Lora, J. M. and Faulk, S. and Corlies, P. and Kelland, J. and MacKenzie, S. M. and West, R. A. and McEwen, A. S. and Lunine, J. I. and Pitesky, J. E. and Ray, T. L. and Rou, M.},
  title={Titan's meteorology over the Cassini mission: Evidence for extensive subsurface methane reservoirs},
  journal={Geophysical Research Letters},

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RIS Citation

ID  - tu01300f
AU  - Turtle, E. P.
AU  - Perry, J. E.
AU  - Barbara, J. M.
AU  - Del Genio, A. D.
AU  - Rodriguez, S.
AU  - Le Mouélic, S.
AU  - Sotin, C. J.
AU  - Lora, J. M.
AU  - Faulk, S.
AU  - Corlies, P.
AU  - Kelland, J.
AU  - MacKenzie, S. M.
AU  - West, R. A.
AU  - McEwen, A. S.
AU  - Lunine, J. I.
AU  - Pitesky, J. E.
AU  - Ray, T. L.
AU  - Rou, M.
PY  - 2018
TI  - Titan's meteorology over the Cassini mission: Evidence for extensive subsurface methane reservoirs
JA  - Geophys. Res. Lett.
JO  - Geophysical Research Letters
VL  - 45
IS  - 11
SP  - 5320
EP  - 5328
DO  - 10.1029/2018GL078170
ER  -

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